What you need before you start
A wireless mouse connects to your computer without a cable. Most wireless mice use one of two methods: a small receiver (called a dongle) that plugs into a USB port, or Bluetooth, which is built into most modern computers. Before you begin, check what your mouse came with — the instruction sheet or the box will tell you which type yours is.
You will also need fresh batteries. Wireless mice typically use two AA or AAA batteries, though some use rechargeable batteries that come with a charging cable. Install the batteries before you try to connect the mouse, because a mouse without power will not respond to any pairing attempt.
If your mouse came with a receiver, keep it nearby — you will plug it in during setup. If it uses Bluetooth, make sure your computer's Bluetooth is turned on. On Windows, this is usually in Settings under Devices. On Mac, it is in System Settings under Bluetooth.
Key Takeaways
- Wireless mice use either a USB receiver or Bluetooth to connect, and your mouse's instruction sheet tells you which one yours requires.
- Install fresh batteries in the mouse before attempting to connect it, because a mouse without power will not pair with your computer.
- For receiver-based mice, plug the dongle into any available USB port and press the pairing button on the mouse until the light blinks.
- For Bluetooth mice, turn on your computer's Bluetooth, hold down the pairing button on the mouse for three to five seconds, and select it from the Bluetooth menu.
- If the mouse does not appear after pairing, restart your computer and try again — this solves most connection problems.
Connecting a mouse with a USB receiver
Plug the small receiver into any open USB port on your computer. It does not matter which port you use — USB ports are interchangeable for this purpose. The receiver should sit flat against the back or side of your computer, or you can use a short USB extension cable if the port is hard to reach.
Once the receiver is plugged in, look at the bottom of your mouse for a small button labeled "Connect," "Pair," or sometimes just a symbol that looks like two curved lines. Press and hold this button for three to five seconds until you see a light on the mouse start to blink. The blinking light means the mouse is searching for the receiver.
Within a few seconds, the light should stop blinking and stay steady or turn off completely. This means the connection is complete. Move your mouse around — the cursor on your screen should follow. If nothing happens, unplug the receiver, wait ten seconds, plug it back in, and try the pairing button again.
Connecting a mouse with Bluetooth
Turn on your computer's Bluetooth first. On Windows 10 or 11, open Settings, select Devices, then Bluetooth and other devices, and toggle Bluetooth on. On a Mac, open System Settings, click Bluetooth, and make sure it is on. You will see a list of available devices once Bluetooth is active.
Now look at the bottom of your mouse for the pairing button — it may be labeled "Pair," "Connect," or "Bluetooth," or it might just be a small unmarked button. Press and hold this button for three to five seconds. You should see a light on the mouse blink, which means it is broadcasting its presence to your computer.
Go back to your computer's Bluetooth menu. Your mouse should appear in the list of available devices within ten seconds — it will usually show up with a name like "Wireless Mouse" or the brand name. Click on it to connect. Once selected, the mouse should appear in your list of paired devices, and the light on the mouse will stop blinking.
What to do if the mouse does not connect
The most common reason a wireless mouse will not connect is dead or missing batteries. Open the battery compartment on the bottom of the mouse, remove the batteries, wait five seconds, and put them back in. Make sure they are inserted in the correct direction — the positive end (marked with a plus sign) should face the direction indicated inside the compartment.
If you are using a USB receiver, try plugging it into a different USB port. Some ports on older computers do not provide enough power, or they may be blocked by other devices. The ports on the back of a desktop computer usually work better than ports on the front.
Restart your computer. This clears out temporary connection problems and forces your computer to search for the mouse again. After restart, repeat the pairing steps — press the button on the mouse and wait for it to appear in your Bluetooth menu or for the receiver to recognize it.
If the mouse still will not connect after a restart, check whether your computer's Bluetooth is actually on. On Windows, open Settings and look for the Bluetooth toggle — it should be blue or show "On." On Mac, the Bluetooth icon in the top menu bar should not have a line through it. If Bluetooth is off, turn it on and try pairing again.
Testing your connection and adjusting settings
Once your mouse is connected, move it around to make sure the cursor follows smoothly. Click the left and right buttons to confirm they work. If the cursor moves but feels slow or jumpy, your mouse may be too far from the receiver or Bluetooth source — try moving it closer.
You can adjust how fast the mouse moves and how sensitive it is to clicks. On Windows, open Settings, go to Devices, then Mouse, and you will see options for pointer speed and click settings. On Mac, open System Settings, click Mouse, and adjust Tracking speed and other options there. These settings do not affect the connection itself, only how the mouse behaves.
If you want to use the mouse on a different computer, you will need to pair it again on that computer. The pairing is specific to each device — a mouse paired to your laptop will not automatically work on your desktop without going through the pairing process again.
Keeping your wireless mouse working
Check your battery level regularly. Most wireless mice will start to feel sluggish or unresponsive when the battery is low. Replace the batteries before they die completely — a dead mouse is harder to troubleshoot than one that straightforward needs new batteries.
Keep the receiver or your computer's Bluetooth antenna clear of obstructions. Metal objects, thick walls, and other wireless devices (like microwaves or cordless phones) can interfere with the signal. If your mouse starts acting up, try moving it closer to the receiver or moving the receiver to a more central location on your desk.
If you are not using your mouse for a long time, remove the batteries. This prevents them from leaking or corroding inside the mouse, which can damage the battery contacts and make future connections unreliable.
Frequently Asked Questions
Can I use a wireless mouse with any computer?
Most wireless mice work with Windows, Mac, and Linux computers. However, some gaming mice or specialty mice are designed for specific operating systems. Check the instruction sheet or the manufacturer's website to confirm your mouse is compatible with your computer before you buy it.
Why does my mouse keep disconnecting?
Low batteries are the most common cause. Replace them first. If that does not help, try moving the mouse closer to the receiver or Bluetooth source, or move the receiver away from metal objects and other electronics. Restarting your computer also fixes many temporary disconnection problems.
Can I use multiple wireless mice on the same computer?
Yes. You can pair multiple Bluetooth mice to one computer, and you can use multiple USB receivers at the same time. However, only one mouse cursor will appear on screen — your computer will use whichever mouse you move last. This is useful if you want to switch between mice without unpairing.
What if my mouse has a power button?
Some wireless mice have an on/off switch on the bottom. Make sure this switch is in the "On" position before you try to pair the mouse. If the mouse is off, it will not respond to pairing attempts, and you may think the batteries are dead when the real problem is straightforward that the mouse is switched off.
Do I need to install software to use a wireless mouse?
No. Most wireless mice work when ready after pairing without any software installation. Your computer's built-in mouse drivers handle the basic connection. Some gaming mice or mice with extra buttons come with optional software that lets you customize those buttons, but this is not required for the mouse to work.